It's tail heavy cause you have a level sitting on the tail 🤔

So...what about the center of lift of the wing vs. center of gravity of the airplane? Do you know anything about the center of lift of a ram air wing? I'm not trying to be a smart ass, but I really want to know this stuff, since I plan to design and build a full-scale version of a wing-in-ground effect craft, that I can climb aboard and fly in person. I really don't want to die the first time I try fly it. Any knowledge you can share would be very appreciated.

Hello Marty, Quis on your/my NA50 was wondering who Originally did the Glass work on it building of the Wing and Fuse? Would definitely like to find out, I purchased the bird a few years back from a guy out in palm Dale CA, would like to build a New wing for it , fuse is in great shape, any info would help and much appreciated, also what was the top Mph of that Bird? From the video it definitely looks like it’s capable of 200 . Thank you for the cool Videos of it 👍🏼🏁. Jeff.

I’d like to try this but I’m still a little confused by it. Wouldn’t twisting the dowel influence your CG measurement?

To protect the wings from the string scratching the wings. use round Styrofoam pipe insulation. Cut off 1" and stick it on the wing. Under the string.

Can't you just balance the plane on the CG? Why do you need to make this big over analyzed way of checking the CG?

I tried this but the dowel pointed at the trailing edge of one wing and the leading edge of the other wing how did you keep the dowel parallel with the wing

Excellent, really well explained, thank you

that method want work

Woks well but a pain in the bum..

I use the 2 paper trick...

I am curious where this flight was...????

Having a tailplane that has an airfoil shape complicates this a bit, but thanks for the video as it will apply to the other 90% of RC models that are provided with a GC location. it does tick me off that I was given "a range" of millimeters from the leading edge for the CG of my Wargo Yak. I still haven't got it flying reliably..

you are the man

I made one of the machines and it works well. Thanks. The only problem I have found is determining the point to put the spirit level on. Most stabilizers are curved and finding the point where you are at zero degree incidence is a bit hit and miss unless you have an incidence machine. Using an incidence machine I generally can find a point on the plane which is the same, and this often is the battery/Rx tray. Any ideas?

I have used this same set up.. It works great and works on many types of wings.. Great video..

showing how to find C.G. on an airplane with a busted up wing in the background lol, i'm out.

Archimedes had nothing on you, pal!

Let's assume that the manufacturer of an RC plane provided the wrong CG. Does this rig allow one to find the correct CG on the plane ??

just a follow up on your vanessa cg rig...built one..works great for most of my planes...only issue I want to touch on...level on the rear stab...before cg stuff...how do you establish what IS LEVEL when hanging plane...(most rear stabs are CURVED a bit) egs..P51.... so level varies on where ON the rear stab you put this level ...is it basically an eyeball thing??? ps..I hung a small weight on fishing line the same weight as the level (7grms} on the nose to equal out weight of the little level

if I read correctly..this gets rid of flipping plane up-side-down...I.should STILL retract gear..right....Im buildind this...(trying to flip a twin engine mosquito..gear up..battery installed..& using fingers..lol TRY THAT!!!).. this looks bang on bud

That cat's a star and gorgeous!

Funny ! Cats are ridiculous !

GOOD!

I am not sure what brand it is. I found it on a now defunct web site. It's a good model but as far as where or who it cam from, I'm not sure. The instructions I'm sure were done by the same people that do the ones for World Models as they look and read exactly the same. As far as I know they don't make it anymore.

what is the brand name of the seller of this model?

@tsawyer148 Dude i hate all the haters out there on youtube with no life that waste everyones time but a good video the giant scale racers are fast even if you did zoom in farther

@straighttailpilot Yes, the hold 2 or 3 races a year. They try to do one in the east, one in the central part of the country and one in the west throughout the year. As a matter of fact, as of the date of this post, (June 26, 2010), they are holding a race in Texas. Not sure of the date for the one out west but it will more that likely be sometime in October or thereabouts.

is this a annual event?

Yes, they are. Unfortunately, Horizon is basically pricing us out of the class. The price of the plane went way up and they are not as appealing anymore to the racers.

This particular class is the formula 1, (Zenoah GT 80, 80 cc engine converted to glow fuel). The average speed for these planes is around 160 to 180 mph or there abouts. There is another class, (Unlimited), that races at these events that average over 220 mph.

Pardon me ignorance ... but what's e average race speed here ?

rcpro 17, is there a comment that is supposed to go here? Just curious...Chuck???

???

thank you, i have a os 75 ax on my sundowner 50, and i have a os 55 ax on my pylon racer nemises...thanks. i think that i will put a saito 36cc for my formula 1.

Currently we are running the Thunder Tiger Pro .46 with a 10X7 prop and the stock muffler, no modifications to the airframe and a minimum dry weight of 5 lbs. 12 oz. Since this is our first year racing, we went with this combo as a middle ground between our "sport" class and our quickie class. These planes can be easily flown by just about any novice flyer and even though they may not be the fastest things around, they make for some very competitive racing and are alot of fun.

what setup are you runing on the sundowner 50, what engine, and whats the prop, and what type exhast.

awsome flying good pilot

That is pretty cool to see, thanks for the link.

thats some very nice flying

Nice plane and awesome pilot. Very smooth.

They were there when I got the model. It is a different color scheme than the real Voodoo, other than it is purple and has the checkers along the side, (which have a white background rather than the chrome accent). All in all, it is a great flying model. The model came from China and they actually sell it as the Dago Red, but it did come with graphics that can be put on that say either Voodoo or Dago Red, with the tail numbers. I won't put them on, I like the clean look it has now.

Nothing modified per say, except for the hardware. The title is referencing the idea that the model is patterned after a full scale modified P-51 Reno racer.

i see you have changed your comment on the vid can i ask what you have modified on it

That last one was brilliant ;-) Has given me the push I needed to post some of my own clubs water antics. Keep an eye out for float plane madness Morgan Sth Aust. Cheers

COOL!!!

nice man very nice man